Rail fastening device



July 7, 1931. B. P. ANDREIANow 1,812,917

` RAIL FASTENING DEVICE 'Filed March e, 195o 2 sheets-sheet 1 INI/enfor.'

' M/memzm Wah? July 7, 1931. B. P, ANDREIANOW RAIL FASTENING DEVICE Filed March 6, 1930 2 Sheets-Sheet 2 vPatented duly 7, 19.31

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Fries @QMS FWLQWITSCE ANDBJEIANOW, OF MOSCGW, 'UNION OF SOCALIST SQVIET REPUBLICS naar. rassurante envien Application .tiled Haren 6, 1930, Mrial Hor, and. in the Union of Socialist Soviet Republics v May 17, 1929.

Due to the action of a Vmoving vehicle, l vertical vibrations are imparted to the rails of railways and in consequence oit these v1- brations the fastening means, as spikes and e screws, are loosened. My invention has for its object to fasten the rail in such a manner that little vibrations perpendicular to the earth are permitted, while'movements in a horizontal direction are prevented.

For this purpose, the rail is mounted on a railway chair plate bylmeans of a dog holt, the head of which 1s movable perpendicularly tothe earth in railway chair plate. rlhis dog bolt is te 'clamped on the oneA hand a ainst a vertical surface or? the railway chair plate and on the other hand against one side of the iiange `of the rail, both by means 'of a clamping i plate, which seizes like a hook over the opposite side ,against transverse movement by suitable means.

I' The rail need no longer be firmly clamped in the hitherto usual but ineicient manner 25 against the chair plate for avoiding movements invlongitudinal and transverse direction. The newv fastenings of the rail are ldurable in a high degree and unusually eiicient in operatlon. l

Constructions according to the invention are illustrated by way of example in the accompanying drawings in which Figure 1 is a section on line I-I of Figure 2 which shows in plan a rail seas cured according tothe invention to a chair plate which is shown in Figure 3 with the fastenlng means or fitting shown in the detail views Figures 4 to 7. ce Figure 8 is a section .on line lll-IH of Fi re 9. i re 9 shows in rail ilstening. f

Figures 10 and 11 are side elevations of e chair plates and Figure 12 is a plan view of same, and Figures 13 and 14 are detail views. The invention consists of structural characteristics and relative arrangement of ele- 5o ments which will be hereinafter more fully plan another form of a recess of the the a flange of the rail, said rail being secured lon clamping described and particularly pointed out in the l appended claims.

The rail 1 (Figure 1) is mounted on a chair plate 2 which is secured by means of sleeper screws 3 to the sleeper. The chair plate (Figure 3) is providedv at one side of the rail with a hook 4c and at the other side with a protuberance 5 and a ledge 6 which extend parallel to the rail. The protuberance 5 is provided with a hole 7 for a bolt 8 which, by means of a nut 9, presses a clamp against the flange of the rail. The clamp 10 bears against the ledge 6. The hook t of the chair plate is undercut as shown at H H Figure 3. At this point the chair plate is provided with an aperture 11 for the passage ofa dog bolt 12 which by means of a nut 13 and of a clamping plate 14, can be clamped to the other edge of the rail iiange and is therefore situated opposite the clamp l0. The dog bolt, clamp and plate are illustrated in Figures 4 The clamp' 10 `forces the rail l under the hook 4 of the chair plate. Practical experience shows that there is always a small play between the hook and the foot or flange of the rail as it is impossible to manufacture the hook and the rail so exactly as to ensure their fitting into each other without any play. 'The shape of the opening 11 is made to suit that of the dog 12 so that the dog engages the chair plate 'with its two lateral faces extending in the direction of the rail. By the action of the clamping plate 14 the rail is pressed against the clamp 10 and thus firmly secured. When vibrations are imparted to the rail by the action of the vehicle, the rail will not be moved as the dog 12 secured to its flange cannot give in the direction of the rail. Even if the clamp 10 becomes loose, the rail will not creep as long as the dog remains rigidly secured to the flange of the rail.

ln the rail Afastening illustrated in Figures 8-14, the rail 15 rests with one edge of its flange under the hook 16 of a chair plate constructed as shown in Fi res l0-12. The chair plate is provided with a recess 18 for the reception of the dog bolt 100 19, the aXis of the bolt bein horizontal. The clamp 20 can be clampe to the rail ange by means of a nut 21 and presses the rail tightly under the hook 16. The bolt of the dog 19 fits without any play in, the recess 18 of the chair plate. As long as it remains secured tothe rail flange the rail cannot creep.

What l claim is 1. ln combination, a rail having the usual foot ange, a railway chair plate having a recess on the upper surface on which said rail is mounted, a dog bolt mounted movable vertically in said recess, pressed on the oneV hand against a vertical surface of said recess and on the other hand against the under side of the -foot ange of said rail, a clamping plate fastened by said dog bolt Y and seizmg over one side of saidrail flange,

and suitable means for securing the opposite side of said rail flange against movement transversely. l

2. ln combination, a rail having the usual foot Bange a railway chair plate having a recess on the upper Surface on which said rail is mounted, a dog bolt mounted movable vertically in said recess, pressed on the one hand against a vertical surface of said recess and on the other` hand against the under side of the foot tlange of said rail, a clamping plate fastened by said do bolt and Aseizing over one side of said rail ange, and an undercut hook integral with said railwa chair plate and receig the opposite si e of said rail Bange.

3. In combination, a rail having the usual foot ange, a railway chair vplate having a recess on the upper surface on which said rail is mounted, a dog bolt mounted movable vertically in said recess, pressed on the one .hand a ainst a vertical surface of said recess an on the other hand aga the under side of the foot flange of said rail, ,a clamping plate astenedb said dog bolt and seizing over one side o said rail flange, an undercut hook integral with said 'railway chair plate and seizing besides said clamping plate over said one side of the rail flange, and a clamp bearing a ainst the other side o the rail flange and astened to the chair p ate.

In testimony whereof l aiiix my signature.

BORIS PAWLOWITSCH ANDREIANOW. 

